They met at Brigham Young University, got married at the Mormon Temple in Salt Lake City, had three kids, a thriving dental practice in Livermore, Calif., a 4,600-square-foot home, a cabin at Lake Tahoe and fancy cars.

The rough times started when Christine, who was 40, got involved with two 14-year-old boys. One was her daughter's boyfriend at middle school, and the other was his best friend.

She had sex with them in a variety of locations, including parking lots and inside her Hummer SUV. Police said she fueled the affair with free money, dinners and video games.

In February, she pleaded guilty to four counts – unlawful sexual intercourse, oral copulation with a person under 16 and two counts of performing a lewd act upon a child. The other charges were dropped in exchange for her plea, and she was sentenced to five years in prison.

"I have to take responsibility, but I don't want to be portrayed as a predator or someone that went out and forced this on anyone. This is not the case at all," she said.

But investigators tell a different account. They say Hubbs groomed her victims by showering them with gifts. Among the gifts she gave were a big screen TV, two phones, two iPods, and X-Box and PlayStation video gaming systems.

She spent tens of thousands of dollars, police said.

"It's like Christmas every single day when Christine came by because she'll give you cash," said Det. Steve Goard of the Livermore Police Department.

Hubbs took her daughter's boyfriend on several family vacations, and investigators say it was on one of those trips to the Tahoe cabin – after Christmas in 2009 – that the relationship turned sexual.

Hubbs acknowledged that she fell asleep with her two daughters and the boy in the same queen-sized bed.

"I was exhausted and I just don't know what happened, I don't know how I broke down, I don't know how I let it happen … I didn't start it. I didn't touch anything back. It was him. He started it," she said.

Hubbs claims she was concerned that her children would wake up, so she says she walked the 14-year-old to another room.

"I wanted him to get out of the room, I asked him to go into the other room a couple times, and he didn't want to, then he pulled me in and I just went with him, I don't know why … Then we had a sexual encounter."

But police dispute her claim. They said she was the aggressor, that the boy was asleep, alone in a bedroom at the cabin.

"And he woke up in the middle of the night, Christine walking in with just a coat on completely naked," Det. Goard said.

Hubbs admits that the sex continued – in hotels, in a spare bedroom at the family home, and in the back of Christine's Hummer, the one with the "HUMDNGA" license plate.

After several months, detectives say the boy finally pulled away.

"That's where boy number two came in," Goard said. "His best friend, she used his best friend to make him jealous."

Hubbs admits it became physical with the second boy after she gave him a ride home from a party. They parked at a Little League ball field.